“记者黑名单”为何令公众也反感?

为何一番关于食品安全的&quot;为国为民&quot;的倡议,会因为&quot;记者黑名单&quot;而招致公众反感?因为公众从某些政府部门监管媒体的控制欲和对媒体的不信任中,看出的是他们对公众的态度&nbsp;</p

Risk Management Mode and its Improvement for Bid of Nuclear Power Project of Company C

进入二十一世纪，我国的核电站建设正处于加速期，越来越多的国内厂家涉足核电。然而，2011年日本福岛核事故使人们开始重视核电项目投标的风险管理问题。国内核电设备供应商以及项目分包方风险管理体系薄弱的现状令人忧虑。 本文借鉴COSO《企业风险管理－整合框架》，提出项目风险评审理论，指出核电项目投标的风险管理应包括目标设定、事项识别、风险评估、风险应对和风险评审五个阶段，而风险评审是实现项目风险管理目标的有力保证。结合C公司核电项目投标风险管理模式的研究，通过与国内外核电设备企业比较，笔者指出C公司模式虽然优于国内企业，具有更健全的风险管理系统，全面又详细的风险评估，仍需从国际同行不同的组织机构所...The construction of nuclear power plant in China is on acceleration into the 21st century. More and more local manufacturers are entering market of nuclear power. However, in 2011, Fukushima nuclear accident drew people attention to risk management in connection with nuclear tender. With reference to COSO “Enterprise Risk Management – Integrated Framework”, it propounds project risk review theory...学位：工商管理硕士院系专业：管理学院高级经理教育中心（EMBA项目）_高级管理人员工商管理硕士(EMBA)学号：X200715611

用蒙特卡罗方法研究混合物模型

本文用蒙特卡罗方法计算了五种高密度二元混合物的压缩因子,并与两种解析的混合物模型的计算值进行了比较,结果表明单液范德瓦尔斯混合物模型的计算值更接近于蒙特卡罗方法的结果

住在郊区就通勤更久吗？中国大都市的空间布局、住房可负担性与通勤时长

城市化带来的长时通勤是当代社会面临的重要问题之一。近年来， 中国城市经历了巨大变迁，传统单位制的瓦解和房地产市场的改革使得大 城市的职住格局发生了巨大的变化，空间上职住分离的矛盾也随之日渐突 出。本文以中国四个特大城市北京、上海、广州、深圳为例，使用 2022 年北上广深电话调查的数据（N=5,482），探讨了不同城市发展模式中居 民的居住安排对其通勤时长的影响模式差异。本文发现，城市空间布局和 住房租售可负担性差异共同塑造居民居住安排与通勤时长的关系：在郊区 主要用作居住功能的就业单中心城市（北京），居住于市郊会显著增加通 勤时长；在住房租售可负担性差异大的城市（深圳），购置房产往往会导 致通勤时长的增加。本文认为，就业多中心的城市发展模式和提供可负担 性高的住房资源能有效减少通勤时长，有利于提高城市居民福祉。The issue of prolonged commuting, a byproduct of rapid urbanization, represents a critical challenge in contemporary society. This study investigates the substantial transitions occurring in job-housing relations within Chinese megacities, prompted by the dissolution of the traditional danwei system and the advent of housing marketization reforms. Consequently, the spatial separation of employment and housing has become progressively conspicuous. This research employs data from a 2022 telephone survey (N=5,482) of four megacities in China—Beijing, Shanghai, Guangzhou, and Shenzhen—to examine the differential impacts of residents' living arrangement on their commuting durations within different spatial patterns. Our findings indicate that the interplay between spatial arrangement and housing affordability influences the relation between residents’ housing choices and commuting durations. In employment monocentric cities with residential functions concentrating in the suburbs (e.g., Beijing), living in the suburb significantly increases commuting duration. In cities with disparities between rental and home-ownership affordability (e.g., Shenzhen), property ownership is associated with extended commuting durations. This research posits that the implementation of employment polycentric urban development and the provision of affordable housing resources could effectively reduce commuting durations, thereby enhancing the wellbeing of urban residents